The ALZO Suction Mount easily attaches to smooth surfaces like glass and metal; it can even attach to smooth painted doors and walls. With the ball mounts removed, the mount base includes a 1/4 inch x 20 screw thread for attaching other devices, including cameras, audio recorders, field monitors and more. The suction pump includes a red ring suction loss visual indicator that shows when the suction is weakening. This pump action suction mount is a safe and sturdy method of attaching video accessories to a car windshield, either interior or exterior.